Product Information

Precision positioning switches

1. Detection of 0.1 mm-scale slight movements
2. Improvements in mechanical precision
3. Savings in space and cost required
   for equipment

Latest use cases

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  Table positioning
  Control of the X- and Y- axes with a precision of 1 μm

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  Positioning of the end face of equipment
  Control of the starting point of equipment

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  Seating confirmation of workpiece
  Use as a stopper for 300 kg static loads

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  Tool setter
  Correction of the position of worn edged tools with a precision of 0.5 μm

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  Zero seek for robots
  Correction of the thermal displacement of the Z-axis with a precision of 0.5 μm

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  Positioning within machine tools
  Use in adverse environments caused by scattering chips and cutting-oil

This is what distinguishes precision positioning switches from other manufacturers' sensors!

Metrol precision positioning switches are precision mechanical devices.
Like a Swiss mechanical watch, it is assembled from over 7,000 original precision components based on skilled craftsmanship. Over 700 kinds of products are manufactured on the production line, which, though automated, is under the control of responsible individuals.

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Metrol conducts integrated quality control throughout the production, quality inspection and delivery processes within its Tokyo factory and ships the products thus manufactured to customers all over the world.

Comparison with other manufacturers' sensors

	Contact type			Non-contact type
	Precision positioning switches	Microswitch Limit switch	Contact displacement sensor	Proximity sensor	Photoelectric sensor Optical fiber sensor Laser sensor
Precision	0.5 μm minimum	N/A (approx. 50 to 100 μm)	1 μm minimum	10 μm minimum
Hysteresis	None (precision mechanical type)	Yes (snap action mechanism)	Yes (electrical type)
Temperature drift	No (because of no amplifier)		Drift occurs (because of amplifier)
Influence of the external environment	None (mechanical type)		Influenced by temperature, illumination, electric fields and magnetic fields (electrical type)
Interference	None			Yes (influenced by magnetic fields)	None
Object detection limitations	None			Yes (influenced by the material and color of the object)
Influence to the detected surface	None			Influenced by the surface roughness and contamination (water, oil, etc.)
Usability in special environments at high temperatures or in a vacuum or magnetic field	Usable (consultation required)	Not usable
Life	3 million to 10 million operations	100,000 to 500,000 operations	10 million operations	None (however, overcurrent often destroys elements.)

Disadvantages of precision positioning switches

• Precision positioning switches are unable to detect things that cannot be touched including liquid and soft objects.
• Tact time is prone to be long because workpieces require contact.
• Vibration, impact and the operating speed (10 mm/minute maximum) at the mounting location may cause a chattering phenomenon in which electric signals keep turning on and off intermittently.
  (Chattering can be prevented by taking the initial signal or by selecting NO type switches.)

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Product specifications?(typical model listed)

Typical model	Ultra-small type PT series
Repeatability	0.001 mm for both ON and OFF (range)
Contact precision life	3 million operations
Operating modes	A:NO (Normally open)	B:NC (Normally closed)
Circuit
Movement before the start of operation	Approx. 0.3 mm	Nearly zero
Protective construction	IP40	IP40	IP67 (Waterproof)
Contact force	0.5N	0.5N	0.8N
Stroke	1.5mm
Hysteresis	0
Temperature drift	0
Range of operating temperature	0 to 80 °C (non-freezing)
Contact ratings	5 V DC to 24 V DC, 10 mA (20 mA maximum) resistive load

Cyclic test with an Agilent laser measurement system

Repeatability is measured with the Agilent laser measurement system that has a precision of 1/100,000 mm.
Compact as it is, the switch can achieve 1 μm repeatability (in the case of the high-precision type, 0.5 μm repeatability).

Endurance tests repeated as many as 10 million operations or more

Endurance tests were repeated over 10 million operations to ensure an durability of 3 million operations.
Despite being a mechanical type, the switch has an assured durability of 3 million operations.

The voice of engineers

We have received many comments from engineers.

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  Semiconductor engineer

  We use the vacuum-compatible type for positioning in the solar panel manufacturing process.
  Previously, there were no sensors usable in a high vacuum and we were forced to conduct positioning with optical sensors from outside the system via viewports.
  Now, using this switch, we don't need viewports any more.
  In this way, costs have been reduced and the price competitiveness of the system has increased.

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  Medical equipment engineer

  We have employed the radiation-compatible type for the positioning of irradiation mechanisms for radiation therapy equipment.
  Previously, radiation accelerated the degradation of optical sensors and the costs and labor required for replacement were considerable. After the introduction, however, no labor is required for replacement and the equipment operation rate has improved.

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  Elevator engineer

  We have employed precision positioning switches to confirm the opening and closing of the disk brakes of elevators.
  The switch can precisely detect 0.5 mm slight movements without hysteresis and has enhanced the safety of elevators.
  Brake problems have been reduced and inquiries from other industries have increased.

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  Medical equipment engineer

  We have employed precision positioning switches for the balancing of microscopes used in neurosurgery.
  The switch supports the inosculation of 0.05 mm blood vessels at a micron level.
  The high precision of those microscopes has gained a good reputation in this field and many medical institutions around the world have decided to introduce them. Its small size is also very helpful in incorporating it into the equipment.

Other product lineup

There are a variety of series depending on the application.
For details, please request the postage-free Precision Positioning Switch General Catalog.

SWITCHES for Precision Positioning
STE100PB-L
STMB12A-L
STMB11A-L
STM36A-L
STM34A
STM32A
STM12A-LR
STE100PA
STE080PB-L
STP100UB-L
STP080DB
STP080DA-L
PT5M1CB-BL
PT5M1CB-B
PTP5M1CB-L
PT5S3WA-L
PT5S1WA-L
PT5M3CB-BL
PT5M1CB-L
STS100PA-L
STS080PB
P10DB-BU
P11GMB-ALD
P11EMB-D
P11EDBP-DU
P11EDB-D
P11DMBP-DU
P11DMB-DUK
P11DDBP-DUK
P11DDBP-D
P11DDB-D
P10DHA-FUL
P10DA-BUL
P10DA-AUL
P10SHA-T
P10DLB-EL
P10DLB-ALG
P10DLB-ADL
P10DLB-TDL
P10DHLTB-TAW
P10DHB-TAW
P10DB-T
P10DB-ALH
P10DB-AH
P10DA-BU
P10DA-AU
P10DA-AR
P10DA-ADL
P10DLB-AL
P10DA-B
CSCHP-TAW
CSJS50A-L
CSP087B-A
CSP087A-B
CSS80A-BLG
CSS60B-L
CSS60A-LDR
CSS60A-LSR
CSP087B-BL
CSK087B-TDWL
CSK087B-TDW
CSK087B-S
CSK087ATNA-L
CSK087A-TLG
CSK087A-TG
CSK087A-LR
CSK087A-BLS
CSH121ATPA-D
CSH121ATNA-D
CSH121A-DL
CSH121A-CL
CSCHP-T
CSC-G
CSC-BG
CS087A-TL
CS087A-B
CS067A-LG
CS087A-LS
CS067A-DP
CS065A-L-5
CS065A-ALR
BP060A-LT-5
BP060A-LDF
GN-STM35A-3
BP060A-LD
CS065A-LDR-5
P10DHKTB-TAWLH-0.5-CG-5
PT5S3WA
P11DMB-DU
P10DB-A
CS067B
CS067B-B
PT5S1WB
STMB11A
P11GDB-DU
PT5M1CB
CSH121A-AL
PT5M1WB
CSK087B
P11DDB-DULD
CS067A-L (N-MSTKD-BD)
P11DMB-29-02
STM61A
P11DMB-29-01
CSK087A-L
PT5S1CB
CSJ055A-L
P11DDB-DULDK
P11DMB-DU-5P1
P08SB-A
P10DA-BL
P11DDB-16S
P19DH-01-01H
CSK087A
CSJ055A
CS067B-7
PTP5M3CB-L
CSS60A-L
P11DDBTPB-DULDK
CS067A-BL (N-MSTKD-FDB)
BP060A (MSPB6)
STM61A-L
PT5M3WB
P10DL-01-10
CSH121B-A
GN-PT5M3B-01
P10DL-01-11
CS087A
P11DMB-DLD
CSS80A
PT5M3CB (CMST)
CS067A (MSTKD-B)
CSCP
CS067A-HT2
P10DB-BUH
P10DKBTPA-DU
CS067B-L
P11EDB-DULD-5
P19DH-01-01S
CS087A-L
SP060A (MSPSS6)
STM82A-L
SP060B-L
CSRNBTPB-L1A
P13DBC-DS-07
P10DB-DUH
P10DHA-TLG
SP060A-L
P11GMB-DLD-DG-5
P10DA-AL
CSJ055A-LDR
STM12A-R
CSH121A-A
CS067A-C
P11DDB-DU
CS087A-BL
CS067A-LR (N-MSTKG-B)
CS067A-CL
P11DMB-DULD
P11DMBP-DULD
STP100UA-0.12-CH-2
STM11A
P10DLB-A-10
P10DHKTB-TDWUL
P10DA-A
P10DB-AL
CSH121-01S
P10DLB-A
P10DA-BULD-6-V
CSH121B-AL
STE100PA-L
CSP087A-A
CSM105CB
STS060PA-L
STM14A-L
CSK087A-TCL
CSK087A-TDWL
P11EDBPZ-08-01
CSH121A-AL-5
P10DB-B
P11EMB-DU
P11EMB-04-02S
P10DHA-TAW
CS53D-10-30AN
P10DL-01-07S
CSS60A
P10DB-AU-0.3-CG-5
P10DA-15-01V
STM82A
CS065A-BL
STS060PA
CSP087B-02-02S
CS065A-LDR
CSS80A-L
CS067A-B
P11GMBP-DU
STM82A-4
P11FMBC-DS-03
STM36A
CS067A-HT1
P11EMB-DULD
PT5M3WB-L
P11EDB-DULD
STM84A-01
P10DB-BL-W2
CS065B-L
STE060PA
CSK087B-L
P10MCA
CSS80A-LR
CSM105WA
CSP087A-ALR
CSZ-06-00
CSC
STS080PA-L
P11EDB-DU
P10DLB-AU
STM12A-L
STP100DA
CSP087A-AL
P11DMB-21-02S
STM62A-LR
CSH121A-B
CSH121A-05-03
CS067A-ALDR
PT5M3CB-L
CS065A-L
STP100UA
STM82A-LR
P10DHKTB-TBWUL
STS060PB-L
P10MCA-L
CS067A-LDR
P11DMB-21-02H
CS087AZ-BL
P10DB-B-5P1.5
CS087A-LR
CSJ055ATPA-L
CSS60A-R
P11EDB-DULD-DG-W1
P10DB-BU-5P2-V
P11DMB-D
STM84A
CSK087A-TDW
P10DLB-ELG-10
STM34A-L
P11DMB-AU-W2
P10DL-01-07H
STM35A-L
CSS60A-LR
CSK087A-BL
P10DB-BU-5W2
BP060A-LF
STM12A
P10DLB-AU-2
P11GMB-DULD
PT5S3CB
CSJ055A-B
PTP5M1CB-10
P11GMB-DU
CSK087B-LDR
PTP5M1CB
CSK087A-TL
CSMP105CB
STM84A-L
CSM105WB
P11GMB-DU-4
P11DDBTNA-DUK
P11DDB-13-02S
P10DB-BL
CSCP-D
P11EMB-04-04S
STS060PB
STM64A-LR
P11DDB-17-01
STS100PA-L-5
STE080PA
STM13A-L
P11EDBP-DULD
STE060PA-L
P10DB-BU-5
BP060B-F
STM81A-4
CSP087A-ADL
P10DB-AU
P10DB-DU-5
CS065A
BP060A-F
SP060B
STE080A-L
BP060A-L
STS100PB
STS080PA
STM64A-L
PT5M3WA
CS067A-R
CSM105WB-L
CS067A-A
STM32A-L
CSZ-15-01
CSH121A-05-06
P10DLB-17-01S
P10DHLTBTPA-03S
P10DHLB-07S
P11EMB-04-01S
P11DDB-38-07
P11DDB-24-04
P21EDBP-09-11S
P21EDBP-09-09

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